It's been out for a couple of days now, but the 4th printing of the Castles & Crusades Player's Handbook is available, and a few folks on the Troll Lord Forums have a copy.
One of our Friendly Local Gaming Stores had issues procuring it, and told one of my player's group he could not get it for him. The other gaming store in the area, a larger, more recent effort (and where we plan on having our Friday night campaign), has begun taking orders, as it sounds like our Castles & Crusades group is not the only one in the area.
I'm really interested in the updates to the Illusionist (45 new spells!) and the Barbarian (big makeover there, from what I hear). Of course, the changes and errata will be free online over at Troll Lord Games, but I'm looking forward to having it all under the cover of one book. Judging from our gaming session last night, our players currently have a hodgepodge of 1st, 2nd, and 3rd printings. I'm fairly certain the gaming store that will order it is going to be looking at a sizable order in the next two weeks.